My RAmar Oran has Handgun with 15& native and the standart one when the crashes happened. There were always around 4-5 mobs around me.
It also happened once in the Lobby when there were many people.
I never was longer then 5 Minutes in the game.
I now tried to disable Data Execution Prevention for this game and i havent had a crash for about 15 Minutes at the ,,Wrath of the Forest" - Quest, where many mobs spawn in the first room. I have cleared two waves without crash. Before it crashed at the first 4-5 shots.
I havent tried other character for now, but if the crashes arent fixed i will.